I’ve trying to put file excel sheets in the same space in power BI. Essentially, I want to combine the sheets together in one.
I’ve been following a blog post and I end up getting a rather weird error. I’ve tried a couple things and I keep getting to the same error.

I tried using a different sheet, but I get the exact same error.
This is the blog post I’ve been following: https://blog.crossjoin.co.uk/2018/07/09/power-bi-combine-multiple-excel-worksheets/[![After all the steps, it shows the error of the different tables. Mind due]1]1